Checks where visitors come from and gives them a warning if they are likely to be comment spammers. For DoFollow and exDoFollow blogs.
Nofollow Case by Case light version for Comment Author URLs only: No link for very small comments, nofollow link for small comments, follow links for
Simply adds a nofollow tag to all links within a post.
CommentMilk will parse the URL's in comments, and also manages contests through comments.
RSS link for this tag.